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Related Experiment Videos

Atrioventricular valve repair using externally adjustable flexible rings

J Q Melo1, M Abecasis, J Neves

  • 1Department of Cardiothoracic Surgery, Hospital de Santa Cruz, Carnaxide, Portugal.

The Journal of Thoracic and Cardiovascular Surgery
|November 1, 1995
PubMed
Summary

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A new flexible, externally adjustable heart valve ring offers a safe alternative for mitral and tricuspid valve repair. This device effectively reduced or abolished regurgitation in most patients, with no mortality observed.

Area of Science:

  • Cardiovascular Surgery
  • Biomedical Engineering

Background:

  • Atrioventricular valve regurgitation is a significant clinical problem.
  • Current annuloplasty techniques may have limitations in fully correcting regurgitation.

Purpose of the Study:

  • To evaluate the initial results of a novel, externally adjustable flexible ring for mitral and tricuspid valve annuloplasty.
  • To assess the safety and efficacy of this new device in reducing atrioventricular valve regurgitation.

Main Methods:

  • Twenty-five adjustable rings were implanted in 20 patients (14 mitral, 11 tricuspid).
  • Ring adjustments were guided by intraoperative transesophageal color Doppler echocardiography.
  • Standard mitral valve repair techniques were used adjunctively in some cases.

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Main Results:

  • Successful adjustment was achieved in 71% of mitral and 73% of tricuspid rings.
  • 90% of mitral annuloplasty patients had minimal or no residual regurgitation.
  • Tricuspid regurgitation was abolished in all patients post-adjustment.
  • No hospital or late mortality was recorded during a 6-month follow-up.

Conclusions:

  • Externally adjustable rings represent a safe and effective option for atrioventricular valve annuloplasty.
  • The device demonstrates potential in minimizing post-repair regurgitation.
  • Stable and competent valves were observed in most patients post-procedure.